coco vs palm tree

coco and palm tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
coco	Yes	No	No	No
palm tree	Yes	No	No	No

As nouns, palm tree is a hypernym of coco; that is, palm tree is a word with a broader meaning than coco:

coco: tall palm tree bearing coconuts as fruits; widely planted throughout the tropics
palm tree: any plant of the family Palmae having an unbranched trunk crowned by large pinnate or palmate leaves

Other hypernyms of coco include palm.

coco (noun)	palm tree (noun)
tall palm tree bearing coconuts as fruits; widely planted throughout the tropics	any plant of the family Palmae having an unbranched trunk crowned by large pinnate or palmate leaves